Hjalmar lindestrgm



(No Model.) '2 Sheets-Sheet 1.

LINDES'IRM.v

MOWBR. H

Patented Deo. 3, 1889.

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,wm Y A A im? N. PETERS. Phbiwljlhcgnphur, Walhlnlon. D. C.

. 2 Sheets-Sheet 2.

' (No Model.)

MDWBR.

No. 418,468. Patented Deo. 3, 1889.

N. PETERS. PhnloLrthognpmr, Wnshinglum D. C.

UNITED I STATESl PATENT OFFICE.

HJALMAR LINDESTROM, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONE-HALF TO 4 CHRISTOPHER ANDERSON, OF SAME PLACE.

MOWER.

SPECIFICATION forming part of Letters Patent No. 416,468, dated December 3, 1889.

Application filed August 22, 1889. Serial No. 321,643. (No model.)

To aZZ whom it may concern.-

Be it known that I, HJALMAR LINDnsTRM,

a subject of the King of Sweden and Nor- 'Way, and residing in the city of Chicago, in

the county of Cook and State of lllinoishave invented certain new and useful Improvl-Lf-v ments in Mowers; and I do hereby declare Athat the following is a full, clear, and exact description thereof, reference being had to the 1o accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to improvements in the construction of mowing-machines of that class wherein the reciprocatory movement of the cutter-bar is produced through the medium of a pivoted rocking lever, one end of which is connected to said cutter-bar and the other end of which is attached to a reciprocating bar having at its ends wheels or rollers whichengage a scalloped ring-shaped or annular cam upon the main drivin g-wheel of the machine. I

To this end the inventionconsists in the novel devices and combination of devices herein Vshown and described, and more particularly pointed out in the appended claims.

The invention relates more particularly to improvements in that class of machines illustrated in Letters Patent No. L M-1,549, issued to me on the 4th day of, June, 1889.

The main feature of novelty in the present application consists in constructing the sliding bar, which carries on each end a wheel or roller to mesh with the scalloped cam on the driving-wheehin two parts and joining the adjacent ends thereof by a toggle-joint connection, whereby the said wheels or rollers may be thrust into or drawn out of engagement with said cam at the pleasure of the operator.

A second feature of novelty consists in the means employed to permit at all times a vertical adjustment of the cutter-bar, whereby grain of different heights may be cut, combined with the means illustrated for raising the cutter to a vertical position by a lever7 the handle of which is in easy reach of the operator.

5o Another feature of my invention consists in covering or partially covering the face or faces of the driving-wheel to which the ,scalloped cam is secured, whereby dirt and other eXtraneous substances are prevented from clogging or interfering Wit-h the work of the scalloped cam, all of which matters will be hereinafter more fully pointed out.

In the drawings, Figure l is a side elevation of a machine embodying my invention. Fig.

2 is a plan view of the same partially in sec- 6o tion. Fig. 3 is a rear view of the same. Figs.

4 and 5 are vertical sectional views of a portion of the driving-wheel and the cutter-'oaroperating mechanism, the latter in elevation and in two different positions, the section being taken principally on line 4 4 of Fig. 6, certain parts being shown in elevation that would otherwise appear in section. Fig. 6 is an end view of a port-ion of the machine partially in section, the section being taken on 7o line 6 G of Fig. 4. Fig. 7 is a detail perspective view of parts hereinafter set forth.

In the drawings, Ais the main frame of the machine, supported by suitable journal-bearings a from the shaft or axle A', on each end 75 of which is a driving-wheel A2.

A3 is the beam or pole, attached to the frame A in any ordinary 1nanner. The periphery of one of the wheels A2 is provided interiorly with a scalloped and toothed cam A, said cam 8o being preferably provided with teeth a. The construction of this wheel is similar to that shown in mysaid patent, No. 404,549.

A5 is a seat for the operator, secured to the frame A.

B B are two sliding bars movably secured upon the frame A,`at one end thereof, in suitable guides l). Each bar is provided upon its outer and bifurcated end b with a toothed wheel B', which latter is adapted to mesh with 9o the teeth a of the scalloped cani A4. The inner or adjacent ends of the bars B are connected together and adjusted 'in such position with relation to each other and'fthe said cam A4 that when in engagemei fith the 9 5 cam A4 one of the wheels B willnesh-"with the teeth in the depression or lowermost portion of the cam, while the other wheel B will mesh with the teeth on one of thel elevated portions of said cam, whereby, by the revolun roo tion of the wheel A2, the said bars B will receive a reciprocating motion, as will be manifest.

C is a guideblock secured to the frame A on either side of the shaft A', and provided above said shaft with a fiat face c, which latter is provided with a T-head slot c.

C is a block provided with a suitable T- head c2, adapted'to tit nicely in the T-head slot c of the guide C, so as to be moved vertically therein. Projecting from the rear of said block C is a pin or stud c2, which latter is inserted through an elongated slot o r hole c4 in the back of the guide C.

A convenient way of constructing the foregoing parts is to first insert the head c2 of the block C into the slot c', and afterward insert the pin c2 from the rear through the slot c4 and into'a suitable opening in the rear face of the head c2, within which it can be secured by screw-threads or otherwise.

D is a lever pivoted to the bracket (Lwhich latter is secured to and rises from the frame A. The lever D has an enlarged end di', by which it is secured to the end of the stud or pin c3 of the sliding block. C. It will be obvious that by any movement of said lever D on its pivoted support d the said movement will raise the block C up or down. The forward end of the block C is provided with two parallel lugs or anges c".

C2 is a block adapted to fit nicely in the space between the two iianges c, and is provided with an outwardly-projecting pin or stud c6.

B2 B2 are two links constituting a toggle, the lower or outerends of which links are pivoted at Vb2 to lugs rising from the inner ends of the sliding bars B, while the inner or adjacent ends of said links are pivoted to the said pin or stud cG of the block C2.

It will be manifest from the above and by reference to the drawings that the vertical movement of the lever D will raise and lower the block C and at the same time carry the inner ends of the links b2 up or down and thereby withdraw the pinious or wheels B from engagement with the scalloped cam A4, i or will cause said wheels B to engage said j teeth, as the case may be, the two positions being illustrated clearly in Figs. 4 and 5 of the drawings.

C2, as well as vertical motion of the block C', thus providing for a perfect adjustment of the several parts.

A shaft E is suspended in bearin gs a below and from the frame A, and the ends of the arm E are pivotally attached to said shaft E. The lower end of this arm E is pivotally secured by a hinged joint at e to the usual cutter-bar shoe E2, whereby said cutter-bar shoe is permitted a slight rotary movement over the end of said arm E', while the arm and shoe at the same time may receive a vertical movemeut by swinging upon the shaft E. The upward movementof the shoe E2 is limited by contact with the rounded end f of an adjustable arm F, suspended from a beariugj" on the beam A2, said rounded endj'l engaging a socket e2 upon the upper side of the end of said shoe The upper portion of said arm F is provided with one or more notches f2, as shown in Fig. 1. j

F is a rod, one end of which is adapted to engage the notches f2 on the rod F, while thc other end is pivotally attached to a projecting lug]CH3 upon the pivoted foot-piece F2.

f4 is a guide secured to the beam A3, and through which the rod F passes, and f5 is a collar secured to the rod F between said guide and said rod F. fG is a spring interposed between said guide and said collar f5, which spring constantly exerts power in the direction of the rod F, and thereby tends to cause the said rod F to constantly engage the vertical rod F.

It will be manifest from the Construction y.

here shown and described that the operator, when sitting upon the seat A", may easily adjust the height to which the shoe E2 may be raised by simply putting his foot upon the foot-piece F2 and pressing it in such direction as to move the rod F toward him, whereupon the end of said rod will be disengaged from the bar F, and the latter will fall ot' its own weight until the rod F is released and its end again engages one of the holes or openingsf2. The bar F is raised by hand.

G is a hand-lever pivoted at its lower end to a shaft or stud g, projecting outwardly from the beam A2, said lever G carrying on its lower end the segment of a drum or pulley g. Secured rigidlyto thebeamA3 is another segment g2, the periphery of which is provided with a plurality of notches g3, constituting'a ratchet adapted to engage the pawl g4, which pawl is attached to and is actuated by the handle G of the lever G in the ordinary manner.

G2 is a chain or cable secured at its lower end to a plate Il, attached to the shoe E2. Said chain is secured at its oi her end to the drum g. Thus when the pawl g4 is disengaged from the teeth or notches g2, and the lever G is moved backward toward the operator, the said chain or cable G2 will be wound around the drum g' and thus raise the shoe E2 and the cutter-bar carried thereon. The construction shown and described pen mits a slight horizontal motion of the block l'l is the ordinary cutter-bar, to which the knives H2 are secured in the usual manner. Said cutter-bar receives its reciprocating motion from the reciprocating bars B through the following mechanism: Suspended from one of the said bars B is a lug b5, to which is bolted or otherwise secured a block b, having upon its inner face a socket 177. Abell-crank leverI is pivoted to the frame of the machine at 'L'. One end of said lever is provided with an enlargement or ball i', adapted to Iit in the socket 117. To the other end 2 of this lever I is secured by a hinged joint a lever I', which leverl passes through a guide e4 upon the lower end of the arm E', and is also pro- ICO ITO

Vvided at its end withI an enlargement-or ball movement will be communicated'to the level1 I and thus cause a reci rocatin movement of the cutter-bar H.

One of the principal advantages of myimprovement here shown lies in the fact that all of the parts are simple and straight castings or wrought-iron, and may be quickly and cheaply manufactured, are not easily broken, and are so located with reference to each other and with reference to the work that each separate part performs that theordinary wear and tear thereon are reduced to the minimum.

As a further and separate improvement I haveinclosed one face of the driving-wheel A2, that carries the toothed cam A4, andpartially inclosed the other face thereof1 for the purpose of preventing dirt or grain from getting into the teeth of the scalloped cam-wheel and retarding its work. I accomplish this by means of the web-plates J, secured to the wheel A2, between the spokes or ribs thereof. Upon the inner side of said wheel the web J extends only a short distance toward the center, and is, in fact, an annular rim having upon its inner edge an inwardly-turned rim or flange j, for the purpose of deflecting the dirt and earth away from the working parts of the wheel.

When the cutter-bar H is raised in the vertical position for the purpose of transporting the machine from one field to another, I

disengage the wheels B Vfrom contact with..

the scalloped cam A4 by depressing the lever D, as shown in Fig. 5. Thus the wheels A2 maybe revolved at pleasure .without causing a reciprocating movement of the knife-blades H2 when the cutter-bar is in a vertical position.

D is a spring secured to the frame, having its free end in engagement with the short arm d2 of la second lever D2, pivoted to the lever D. The spring D tends to keep said arm d2 in frictional contact with the frame A, as clearly shown in Figs. 4 and 5. To raise the lever D,I first press on the handle of the lever D2 and thus draw the short arm d upwardly. I sometimes find it convenientv to provide one r more holes cl2 in the frame A and place a small pin or stud d4 in the short arm d2, adapted for engagement with said hole d3 when said lever is depressed. In such case a strong. pressure on the handle of the lever D2 toward the lever D will cause said pin to be disengaged from said hole, as will be obvious.

Vhenit is desired to raise the cutter-bar to an upright position, the operator drops the arm F, so that its rounded end f will engage the socket e2 of the shoe E2. The operator then draws up the chain G2 by depressing the handle of the lever G, whereupon the cutter-bar is raised, the socket e and rounded end f becoming a fulcrum.

l. The combination, with the frame and cutter-bar of amower, of a driving-wheel provided with an annular scalloped toothed cam, a reciprocating two-part bar on `said frame, provided withV two wheels or pinions adapted to intermesh with said toothed cam, a toggle uniting the inner ends of said bars, a block C2, uniting the inner ends of said toggle, a vertical sliding block C', having a horizontal guide within which the block C2 slides, and a lever connected with said block C for elevating and depressing the same, whereby the two parts of the reciprocating bar may be moved toward and from each other, substantially as described.

2. The combination, with the frame and cutter-bar of la mower, of a driving-wheel provided with an annular scalloped toothed cam, a reciprocating two-part bar on said frame, provided with two wheels or pinions adapted to intermesh with said toothed cam, a toggle uniting the inner ends of said bar, a block O2, uniting the inner ends of said toggle, a vertically-sliding block C', provided on its front face with two horizontal and parallel lugs or flanges c5 c5, between which the block C2 fits and slides, and a lever connected with said block C for elevating and depressing the same, substantially as described.

3. The combination, with a frame and cutter-bar of a mower, of a driving-wheel provided with an annular scalloped toothed cam, a reciprocating two-part bar on said frame, provided with two wheels or pinions adapted to intermesh with said toothed cam, a toggle uniting the inner ends of said bar, a block C2, uniting the inner ends of said toggle, a block C', provided on its front face with a horizontal guide within which the block C2 fits and slides, said block C being provided with a T- head, a vertical guide C, provided with a T- head slot c', within which the said T-head of the block C iits and slides, and a lever connected with said block C for elevating and depressing the same, substantially as described.

4. The combination, with the frame and cutter-bar of a mower, of a driving-wheel provided with an annular scalloped toothed cam, a reciprocating two-part bar on said frame, provided with two wheels or pinions adapted to intermesh with said toothed cam, a toggle uniting the inner ends of said bar, a block C2, uniting the inner ends of said toggle, a block C', provided with a horizontal guide within which the said block C2 iits and slides, said block C2being provided with a T- head c2, and a pin c2 in said head c2, a verti- IOO IZO

c( l guide C, provided with a T-head slot c, :L slot Or hole c4 in the rear portion of said guide C, and through which the pin cis projects, and a lever connected with said pin for elevating and depressing the said block C', substantially as described.

5. The Combination, with the frame and cutter-bar of a mowing-machine, of L drivewheel provided with an annular scalloped toothed cam, a reciprocating bar provided with toothed wheels Or pinions adapted to. intermesh with said toothed cam, a bent lever pivoted to the frame of the machine, the short arm of which is pivotally secured to said reciprocating bar and the long arm of which is pivotally secured to the cutter-bar, said long arm being provided with a hinged or pivoted joint, whereby the said cutter-bar maybe elevated or depressed independently of the movement of said short arm, substantially as specified.

G. The combination, with the frame of a mowing-machine and a shoe having a cutter bar attached thereto, 'of an adjustable bar, as F, secured to the frameor beam of the inachine independently of the cutter-bar and having its lower end adapted to engage the said shoe when the latter is raised, of a drum secured to the frame or beam, a lever provided with a pawl and ratchet secured to said drum and adapted to operate the same, and a chain or cable one end of which is secured to the drum and the other end of which is sccured to the cutter-bar, whereby by a movement of said lever the cutter-bar may be raised to an upright position, substantially as specied.

In testimony that I claim the foregoing as myinvention I aiix my signature in presence of two witnesses. A

IIJ'ALMAR LINDESTROM. Witnesses: y

TAYLOR E. BROWN, CHRISTOPHER ANDERSON. 

